Wire-clamp



(No Model.)

J. M. KLEIN.. WIR-B CLAMP.

No. 588,446. Patented Aug. 17,1897.

ATENT HCE* JOHN M. KLEIN, OF CHICAGO, ILLINOIS.

WIRE-CLAIVI P.

SPECIFICATION forming part of Letters Patent No. 588,446, dated August 17, 1897'.

' Application iiled June?, 1897. Serial No. 639,638. (No model.)

Be it known that I, JOHN M. KLEIN, a res-ident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Tire Clamps or Stretchers, of which I do declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention has relation more particularly to that class of wire clamps or stretchers'- designed more especially in Stringing telegraph, telephone, barbed wires, or the like, an example of this type of stretcher being shown in Patent No. 481,179, granted to me August 23, 1892.

The present invention has for its object to provide a simple, cheap, durable, and eective construction of wire clamp or stretcher; and with this object in view/the invention consists in the novel features of construction hereinafter described, illustrated in the accompan yin g drawings, and particularly pointed out in claims at the end of this specification.

Figure 1 is a view in side elevation of a wire-clamp embodying my invention. Fig. 2 is a side view of the clamp from the side opposite that shown in Fig. 1. Fig. 3 is a plan view. Fig. .his a view in side elevation similar to Fig. 1, but showing the position of the parts when the jaws are open.

A and B designate the jaws of the clamp, these jaws being connected by the bar C and link D,that are pivot-ed to the jaws by suitably-headed bolts or rivets 2. rIhe opposing edgeshof the jaws Aand B may be straight or slightly groovedlongitudinally, these opposing edges serving to securely engage the wire W when placed between the jaws. rI he jaw A is shown as formed with an angular extension ct, to which is pivotally connected by a bolt 3 the link E, the opposite end of this link being perforated to receive the pivotbolt et, that passes through the link E and through a hole in the draft-loop F, to which the tackle-block willy be connected, and as well also through the ends of the duplex link G, that is preferably formed of the separate bars g g', as clearly seen in Fig. 3. The opposite ends of the duplex bars g g', that comprise the link G, are perforated to receive the pivot-bolt whereby the link G is pivotally connected to the end of the bar C.

When a wire is to be engaged by the clamp, the links E and G will be pressed toward the jaws A and l5, as seen in Fig. at of the drawings, thereby causing the jawsA and B to separate. Preferably a spring H, having one end fixed to and coiled about a stud h, that extends between the sections g g' of the link G, has its free end extended beneath the link or bar C, and this spring tends to force the jaws A and B normally toward each other and upon the wire between the'jaws. When strain is exerted upon the draft-loop F, the links E and G will act as toggles to cause the jaws A and B to iirmly clamp the wire, so that all danger of its slipping from the jaws is avoided. In this class of-devices it is important that the constructions shall be such that the wire should be firmly held by thejaws of the clamp, andit is important also that the length of the clamp shall be short in order to enable the tackle that is attached to the loop vor eye F to engage the wire as near as possible.

In my present invention by the employment of the toggle-links I am enabled to get a very iirm and rigid grasp upon the wire, and the length of the clamp is so reduced that there is but very little distance between the wire andthe tackle-loopr F, as but a slight movement of the toggle-links serves to open the jaws.

I do not wish that my invention should be understood as restricted to the precise details of construction above described. Thus, for

example, it is not essential that the link G sh ould be formed of separate plates, although v this is regarded as preferable.

Having thus described my invention, what I claim as new,`and desire to secure by Letters Patent, is

. 1. A wire clamporstretchercomprising two jaws, a bar 'pivotally connecting said jaws and having an extended end, a toggle-link pivoted to the extended end of said bar, and

another toggle-link pivotally connected vat one end to one of the jaws and at its opposite end pivot-ally connected to said first mentioned toggle-link, substantially as described.

2. A wire clamp or stretcher comprising two jaws, a link and a bar pivotally connected to said jaws, a toggle-link connected to said bar, another toggle-link connected to one of cnd t0 a draft-hook and connected at their 1o the jaws and a draft-loop connected to the opposite ends respectively t0 the angular exopposte ends of said t0gglelinks, substantension of lche jaw A and to the bar C, subtially as described. stantially as described.

3. A Wire clamp or stretcher comprising i T T j aws A and I3, the jaw A being provided with JOHD M' KLEIN an angular extension a, said jaws being piv- Witnesses: otally linked together, a bar C pivoted to ALBERTA ADAMICK, said jaws and toggledinks connected at one OLIVER C. DENNIS. 

